CN111220537A - Stretching pore path trend measuring system - Google Patents
Stretching pore path trend measuring system Download PDFInfo
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- CN111220537A CN111220537A CN202010113368.4A CN202010113368A CN111220537A CN 111220537 A CN111220537 A CN 111220537A CN 202010113368 A CN202010113368 A CN 202010113368A CN 111220537 A CN111220537 A CN 111220537A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
Abstract
The invention is suitable for the technical field of reinforced concrete box girder construction, and provides a system for measuring the trend of a tension duct. The system comprises: the operation device is used for operating on the inner wall of the tensioning pore channel; the operation control device is connected with the operation device and used for dragging the operation device to operate; the measuring device is installed on the operating device and used for measuring the operating parameters of the operating device in real time when the operating device operates in the tensioning pore channel, and the operating parameters comprise acceleration data and angle data. And a tension duct trend model is established according to the operation parameters, so that the actual rotation angle of the duct can be measured, and the problem of inaccurate tension force caused by calculation according to the rotation angle of a drawing is avoided.
Description
Technical Field
The invention belongs to the technical field of reinforced concrete box girder construction, and particularly relates to a stretching pore path trend measuring system.
Background
The prestressed reinforced concrete box girder is a girder commonly used in a high-speed railway, and a longitudinal prestressed steel strand passes through a longitudinal steel bundle pore passage formed by a single-wall plastic corrugated pipe pre-embedded during construction to perform processes of tensioning, sealing, anchoring, grouting and the like, so that the box girder construction process is completed. The parameters of the steel strand such as the tension value, the elongation and the like are one of main control items influencing the quality of the box girder, the determination of the parameters is closely related to the loss of an anchor port of the box girder and the loss of the friction resistance of a pore channel, and in the friction resistance loss test, the corner of the pore channel is an important parameter, so that the angle of the pore channel needs to be obtained firstly when a tension pore channel model is established. In the prior art, the magnitude of the tension force is calculated according to the corner of a drawing, but the actual construction of the box girder may cause the error between the corner and the design drawing, so that the tension force is not accurately calculated.
Disclosure of Invention
In view of this, the embodiment of the invention provides a system for measuring the direction of a tensioned duct, so as to solve the problem that the calculation deviation of the tensioning force is large easily caused by calculating the tensioning force of the duct according to the turning angle of a drawing in the prior art.
A first aspect of an embodiment of the present invention provides a system for measuring a stretch-draw duct trend, including: an operation device, a measurement device and an operation control device;
the operation device is used for operating on the inner wall of the tensioning pore channel;
the measuring device is arranged on the operating device and used for measuring the operating parameters of the operating device in real time when the operating device operates in the tensioned duct and establishing a tensioned duct trend model according to the operating parameters;
and the operation control device is connected with the operation device and used for dragging the operation device to operate.
In one embodiment, the running gear comprises a vehicle plate, a plurality of brackets, a plurality of lead screws, a plurality of wheels, a plurality of axles and a pull ring, wherein the number of the brackets, the lead screws, the wheels and the axles is the same;
the vehicle plate is used for bearing and fixing the measuring device;
the brackets are fixed around the vehicle plate, and bracket connecting interfaces are arranged on the brackets;
one end of each axle is provided with an axle connecting interface, and the other end of each axle penetrates through the corresponding wheel and is used for supporting the corresponding wheel;
one end of each lead screw is connected with the support connecting interface of the corresponding support, the other end of each lead screw is connected with the axle connecting interface of the corresponding axle, and the lead screws are used for adjusting the distance between the connected supports and the axles so that the corresponding wheels are tightly attached to the inner wall of the tensioning pore channel;
the pull ring is arranged at the front end of the vehicle plate and is used for being connected with the operation control device.
In one embodiment, each axle is a U-shaped axle; the plurality of U-shaped axles respectively penetrate through the corresponding wheels and fix the corresponding wheels at the U-shaped bends of the U-shaped axles;
each lead screw is a threaded lead screw, corresponding threads are arranged in each support connecting interface, and corresponding threads are arranged in each axle connecting interface.
In one embodiment, the operation device further comprises: the number of the bearings is the same as that of the axles;
each bearing is arranged on the corresponding axle, so that each wheel is fixed on the outer side of the corresponding U-shaped axle through the corresponding bearing respectively, and the corresponding wheel is supported to rotate.
In one embodiment, the operation control apparatus includes:
a rope retracting rod for providing a supporting function;
the first pulley is fixed in the middle of the rope collecting rod;
the motor is fixed at the top end of the rope retracting rod;
the second pulley is fixed at the opposite end of the motor on the rope retracting rod through a universal coupling;
one end of the pull rope is connected with the running device, and the other end of the pull rope winds the second pulley after winding the first pulley, so that the motor drives the second pulley to rotate through the universal coupling, the pull rope is wound on the second pulley, and the first pulley is rotated through the pull rope to pull the running device to move.
In one embodiment, the measuring device comprises a main control unit, an acceleration measuring unit and an angle measuring unit; the operating parameters comprise acceleration data of the operating device and angle data of the operating device;
the main control unit is respectively connected with the acceleration measuring unit and the angle measuring unit and is used for sending measuring commands to the acceleration measuring unit and the angle measuring unit;
the acceleration measuring unit is used for acquiring acceleration data of the operating device in real time according to the received measuring command and sending the acceleration data to the main control unit;
the angle measuring unit is used for acquiring angle data of the operating device in real time according to the received measuring command and sending the angle data to the main control unit;
the main control unit is further configured to receive the acceleration data and the angle data, and perform operation processing on the acceleration data and the angle data.
In one embodiment, when the stretching duct trend is measured, a space rectangular coordinate system and a measuring device coordinate system are established, the conversion from the measuring device coordinate system to the space rectangular coordinate system is performed through the measured operating parameters of the operating device, and a stretching duct trend model is established according to the operating parameters after the conversion of the coordinate system.
In an embodiment, the measurement apparatus further includes: the device comprises a battery unit, a measurement mode selection unit and a storage unit;
the battery unit is respectively connected with the main control unit, the acceleration measuring unit and the angle measuring unit and used for supplying power to the main control unit, the acceleration measuring unit and the angle measuring unit;
the measurement mode selection unit is used for providing corresponding modes for the tensioned pore channel test, and the modes comprise a vertical bent pore channel mode and a horizontal bent pore channel mode;
and the storage unit is used for receiving and storing the coordinate information sent by the main control unit.
Compared with the prior art, the embodiment of the invention has the following beneficial effects: the operation device is arranged and used for operating on the inner wall of the tensioning pore channel; the measuring device is arranged on the operating device and used for measuring the operating parameters of the operating device in real time when the operating device operates in the tensioned duct and establishing a tensioned duct trend model according to the operating parameters; and the operation control device is connected with the operation device and used for dragging the operation device to operate. Therefore, the operation parameters of the operation device can be measured in real time, the stretching pore path trend model is established according to the operation parameters, the actual rotation angle of the pore path can be measured, and the problem of inaccurate stretching force caused by rotation angle calculation according to a drawing is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic diagram of a tensioned duct strike measurement system according to an embodiment of the invention;
FIG. 2 is a schematic view of an operating apparatus provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram of an operation control apparatus provided in an embodiment of the present invention;
FIG. 4 is an exemplary diagram of a measurement device provided by an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a tensioned duct strike measurement system according to an embodiment of the present invention;
FIG. 6 is a schematic flow chart of a method for measuring a stretch-hole direction according to an embodiment of the present invention;
FIG. 7 is an exploded view of an acceleration sensor in a measurement mode of a flat curved tunnel according to an embodiment of the present invention;
FIG. 8 is a schematic view of a local measurement of a flat bending trend provided by an embodiment of the present invention;
FIG. 9 is a schematic view of a vertical bend walking direction local measurement provided by an embodiment of the present invention;
fig. 10 is a schematic view of the rotating operation of the operating device according to the embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Fig. 1 is a schematic view of a tensioned duct strike measurement system according to an embodiment of the present invention, which is described in detail below.
The tensioned duct strike measurement system may include: an operation device 1, a measurement device 2, and an operation control device 3.
The operation device 1 is used for operating on the inner wall of the tensioning pore channel;
the measuring device 2 is installed on the operating device 1 and used for measuring the operating parameters of the operating device 1 in real time when the operating device 1 operates in a tensioned duct and establishing a tensioned duct trend model according to the operating parameters;
and the operation control device 3 is connected with the operation device 1 and used for dragging the operation device 1 to operate.
According to the system for measuring the trend of the tensioned duct, the measuring device arranged on the operation device can measure the operation parameters in real time along with the operation of the operation device, and the stretched duct trend model is established according to the operation parameters.
Optionally, the diameters of the tensioning ducts in different box girders are different, so that the size of the operation device 1 is also different, for example, when the diameters of the different tensioning ducts are different, the size of the designed sweep and/or the size of the wheel are also different, but the operation device 1 needs to be tightly attached to the inner wall of the tensioning duct to operate. As shown in fig. 2, in the tension duct 10 inside a certain box girder, the running device 1 may include a deck 11, a plurality of brackets 15, a plurality of lead screws 16, a plurality of wheels 12, a plurality of axles 13, and a pull ring 14, wherein the number of the plurality of brackets 15, the plurality of lead screws 16, the plurality of wheels 12, and the plurality of axles 13 is the same.
The vehicle plate 11 is used for carrying and fixing the measuring device 2, so that the measuring device 2 can operate along with the operation of the operation device 1, and can measure operation parameters of different operation positions. Also included in fig. 2 is screw 15; optionally, the vehicle plate 11 fixes the measuring device 2 by a screw 15.
Optionally, the measuring device 2 may be disposed at a center of the front end surface of the vehicle body panel 11, so as to facilitate subsequent calculation according to the operating parameters measured by the measuring device. Alternatively, a groove may be provided at a central position of the front end surface of the floor panel 11, and the measuring device 2 may be placed in the groove to fix the measuring device 2.
The plurality of brackets 15 are fixed around the vehicle plate 11, and bracket connection interfaces are arranged on the plurality of brackets 15;
one end of each axle 13 is provided with an axle connecting interface, and the other end of each axle passes through the corresponding wheel 12 and is used for supporting the corresponding wheel 12;
one end of each lead screw 16 is connected with the corresponding support connecting interface of the support 15, and the other end of each lead screw is connected with the corresponding axle connecting interface of the axle 13, so that the distance between the connected support 15 and the axle 13 is adjusted, and the corresponding wheel 12 is tightly attached to the inner wall of the tensioning pore channel;
optionally, support, lead screw, wheel and axletree all can set up to four, and four wheels are fixed respectively through four supports like this the upper and lower, left and right four faces of sweep 11, corresponding support and axletree are connected to the lead screw, and the wheel is installed on the axletree, can adjust the distance of support and axletree through rotatory lead screw for the wheel can be hugged closely stretch-draw pore's inner wall. Alternatively, the wheels above the bed 11 and the wheels below the bed 11 may be symmetrically designed, and the wheels to the left of the bed 11 and the wheels to the right of the bed 11 may be symmetrically designed.
Optionally, each lead screw 15 is a threaded lead screw, a corresponding thread is arranged in each connecting interface of the bracket 16, and a corresponding thread is arranged in each connecting interface of the axle 13, so that the lead screws 15 are connected with the bracket 16 and the axle 13.
The pull ring 14 is arranged at the front end of the vehicle plate 11 and is used for connecting the operation control device 3.
Alternatively, each axle 13 is a U-shaped axle, and a plurality of U-shaped axles respectively pass through the corresponding wheels and fix the corresponding wheels at the U-turn of the U-shaped axle. Namely, four U-shaped axles are fixed to the upper, lower, left and right surfaces of the sweep 11, respectively. Alternatively, the axle above the vehicle plate 11 and the axle below the vehicle plate 11 may be symmetrically designed, and the axle to the left of the vehicle plate 11 and the axle to the right of the vehicle plate 11 may be symmetrically designed.
Optionally, the operation device 1 further includes: the same number of bearings as axles. Each bearing is arranged on the corresponding axle, so that each wheel is fixed on the corresponding U-shaped axle through the corresponding bearing respectively, and the corresponding wheel is supported to rotate. Optionally, when the number of the wheels is four, the number of the bearings is also four.
Alternatively, as shown in fig. 3, the operation control device 3 may include: a rope-collecting rod 31, a first pulley 32, a motor 33, a second pulley 34, a universal joint 35 and a rope 36.
A rope retracting lever 31 for providing a supporting function;
a first pulley 32 fixed to the middle of the rope take-up rod 31;
the motor 33 is fixed at the top end of the rope collecting rod 31;
a second pulley 34 fixed to the opposite end of the motor 33 on the rope take-up rod 31 by a universal joint 35;
one end of a pull rope 36 is connected with the running device 1, and the other end of the pull rope 36 winds around the second pulley 34 after passing around the first pulley 32, so that the motor 33 drives the second pulley 34 to rotate through the universal coupling 35, the pull rope 36 is wound on the second pulley 34, and the first pulley 32 is rotated through the pull rope 36 to pull the running device 1 to move. Optionally, one end of the pulling rope 36 is connected with the running gear 1 through the pulling ring 14.
Optionally, as shown in fig. 3, a through hole is arranged in the center of the rope retracting rod 31; the through hole can be rectangular, and the length of through hole can be set according to the demand, for example the length of through hole is for being greater than or equal to 2/3 of receipts rope pole length in order to adjust the height of first pulley, makes the stay cord can be in same water flat line with running gear 1.
Optionally, as shown in fig. 3, the operation control device further includes: a first bearing 37, a screw 38, a first washer 39, a nut 310 matched with the screw, an auxiliary rod 311, a second bearing 312, a speed reducer 313 and a second washer 314;
the first bearing 37 is arranged in the first pulley 32, so that the first pulley 32 is sleeved on the screw 38 through the first bearing 37;
the screw 38 passes through the through hole and is fixed on the rope-collecting rod 31 by adopting a nut 310 matched with the screw, so that when the running device 1 runs, the pull rope 36 connecting the first pulley 32 with the running device is kept horizontal;
the first washer 39 is disposed between the screw 38 and the through hole to increase friction between the screw and the through hole, so that the first pulley is more stably fixed.
One end of the auxiliary rod 311 is connected with the rope retracting rod 31, and the other end is arranged below the motor 33 and used for fixing the motor 33;
the second bearing 312 is fixed inside the rope-collecting rod 31, a rotating shaft inside the second bearing 312 is connected with one end of the universal coupling 35, and the other end of the universal coupling 35 is connected with the speed reducer 313 and then is connected with a rotating shaft inside the motor 33;
the second washer 314 is disposed between the second bearing 312 and the second pulley 34 to increase the friction between the second bearing and the second pulley, so that the second pulley is more stably fixed.
Alternatively, the movement of the operation device may be controlled by an operation control device shown in fig. 3.
Optionally, as shown in fig. 4, the measuring device 2 includes a main control unit 21, an acceleration measuring unit 22, and an angle measuring unit 23; the operating parameters comprise acceleration data of the operating device and angle data of the operating device;
the main control unit 21 is connected to the acceleration measurement unit 22 and the angle measurement unit 23, and configured to send a measurement command to the acceleration measurement unit 22 and the angle measurement unit 23;
the acceleration measuring unit 22 is configured to acquire acceleration data of the operating device 1 in real time according to the received measurement command, and send the acceleration data to the main control unit 21; alternatively, the acceleration measuring unit 22 may collect three-axis acceleration data.
The angle measuring unit 23 is configured to acquire angle data of the operating device 1 in real time according to the received measurement command, and send the angle data to the main control unit 21; alternatively, the angle measuring unit 23 may collect three-axis angle data.
The main control unit 21 is further configured to receive the acceleration data and the angle data, and perform operation processing according to the acceleration data and the angle data.
Optionally, as shown in fig. 4, the measuring apparatus 2 further includes: a battery unit 24, a storage unit 25, and a measurement mode selection unit 26;
the battery unit 24 is respectively connected to the main control unit 21, the acceleration measurement unit 22 and the angle measurement unit 23, and is configured to supply power to the main control unit 21, the acceleration measurement unit 22 and the angle measurement unit 23;
the storage unit 25 is configured to receive and store the coordinate information sent by the main control unit.
The measurement mode selection unit 26 is configured to provide corresponding modes for the tensioned duct test, where the modes include a vertical curved duct mode and a horizontal curved duct mode. Namely, when the vertical and curved pore canal needs to be measured, the mode of the vertical and curved pore canal can be selected, and when the horizontal and curved pore canal needs to be measured, the mode of the horizontal and curved pore canal can be selected.
Optionally, the measuring apparatus 2 may further include: and the resetting unit is used for resetting the measuring device before the running device runs each time and clearing the measuring and recording data space.
Alternatively, the main control unit 21 may adopt a controller, the controller may be STM32F103C8T6, and the acceleration measurement unit 22 and the angle measurement unit 23 may adopt a highly integrated chip MPU 6050. The battery unit 24 comprises a power supply electronic unit and a voltage conversion sub-unit, wherein the power supply electronic unit adopts a battery P1 capable of providing 5V voltage, the voltage conversion sub-unit adopts RT 9193-33, and the 5V voltage is changed into 3.3V after the RT 9193-33 is carried out to supply power for the whole circuit. Fig. 5 shows a schematic circuit diagram of a tensioned duct strike test system. The battery P1 can select Header 6, the VCC pin of the battery P1 is connected with the voltage input pin VIN of RT 9193-33, the GND pin of the battery P1 is connected with the GND pin of RT 9193-33 and then grounded, the BP pin of RT 9193-33 is connected with the capacitor C4 and then grounded, a capacitor C3 is connected between the VCC pin of the battery P1 and the GND pin in parallel, the EN pin of RT 9193-33 is connected with the switch KEY KEY1 in series and then connected with the voltage output VOUT pin of RT 9193-33 and then respectively connected with one end of a capacitor C1, one end of a capacitor C2 and one end of a resistor R1, the other end of the capacitor C1 and the other end of the capacitor C2 are grounded, and the other end of the resistor R1 is connected with. The junction of capacitor C2 and the VOUT pin of RT 9193-33 is the voltage output. Optionally, after the KEY button KEY1 is pressed, the power supply sub-unit is connected to the voltage conversion sub-unit to output a voltage of 3.3V, and at this time, the LED lamp is turned on.
Optionally, as shown in fig. 5, an SDA pin and an SCL pin of the MPU6050 are respectively connected to a PA1 pin and a PA2 pin of the STM32F103C8T6, the VDD pins are both connected to 3.3V, and the VSS pins are both grounded; the DATA3 pin of the TF card holder is connected with the PA4 pin of the STM32F103C8T6, the CMD pin of the TF card holder is connected with the pin, the CLK pin of the TF card holder is connected with the PA5 pin of the STM32F103C8T6, and the DATA0 pin of the TF card holder is connected with the PA6 pin of the STM32F103C8T 6.
In addition, a resistor R3 is connected in series between the SCL pin of the MPU6050 and the PA2 pin of the STM32F103C8T6, and the SCL pin of the MPU6050 is connected with a resistor R9 and then connected with 3.3V voltage. A resistor R5 is also connected in series between the SDA pin of the MPU6050 and the PA1 pin of the STM32F103C8T6, and the SDA pin of the MPU6050 is also connected with a resistor R10 and then connected with 3.3V voltage. The INT pin of the MPU6050 is connected with the 2 pins of the battery P1 after being connected with the resistor R6 in series. The CLKIN pin of MPU6050 is connected to the FSYNC pin of MPU6050 and then grounded. An AD0 pin of the MPU6050 is respectively connected with one end of a resistor R7 and one end of a resistor R8, the other end of the resistor R7 is grounded, and the other end of the resistor R8 is connected with a pin 1 of the battery P1. The VLOGIC pin of the MPU6050 is connected to the VDD pin of the MPU6050, and then to one end of the capacitor C5 and the voltage of 3.3V, respectively, and the other end of the capacitor C5 is grounded. The voltage difference between the first and second terminals of the MPU6050 is in series with the capacitor C7 and then grounded, and the voltage difference between the second and third terminals of the MPU6050 is in series with the capacitor C6 and then grounded.
The pin PDI-OSC _ IN of the STM32F103C8T6 is connected with one end of a crystal oscillator Y1 and one end of a capacitor C10 respectively and then grounded, and the other end of the Y1 is connected with the pin PDI-OSC _ OUT of the STM32F103C8T6 and then is connected with a capacitor C9 IN series and then grounded. The NRST pin of the STM32F103C8T6 is connected to the parallel circuit of the capacitor C8 and the reset key SW1, respectively, and then grounded.
After the circuits of the stretching channel trend measuring system are connected, the battery unit can be started to supply power to test the stretching channel trend, the moving device runs on the inner wall of the stretching channel, the measuring device carries out real-time measurement, and the measured operating parameters are processed by the measuring device to establish a stretching channel trend model. When the stretching pore path direction is measured, a space rectangular coordinate system and a measuring device coordinate system are established, the conversion from the measuring device coordinate system to the space rectangular coordinate system is carried out through the measured operating parameters of the operating device, and a stretching pore path direction model is established according to the operating parameters after the conversion of the coordinate system.
Optionally, as shown in fig. 6, the method for measuring the stretch hole direction may include:
Optionally, before the power supply is turned on, the operation control device is placed on the manual operation platform at the front end of the tensioning pore channel, and then the height of the platform is adjusted, so that the operation control device is placed at a reasonable position and is stably placed. And then binding one end of a pull rope in the operation control device on a steel strand penetrating through a strand pulling machine, sending the steel strand bound with the pull rope to the end to be detected of the pore passage by the strand pulling machine, releasing the pull rope, and pulling out the steel strand by the strand pulling machine to enable the pull rope to penetrate through the whole pore passage to be detected. And fixing the pull rope on a pull ring on the operation device, and placing the operation device at the port of the section to be tested of the stretching pore channel. And winding the other end of the pull rope on the second pulley after winding the other end of the pull rope around the first pulley, adjusting the position of the first pulley, keeping the pull rope horizontal, and fixing the pull rope by using a nut to finish the preparation work.
Optionally, the present embodiment may include a vertical curved channel mode and a horizontal curved channel mode. Therefore, when the vertical bent pore canal is measured, the vertical bent pore canal mode is selected after the power supply is turned on; when the measurement of the flat-bent pore canal is carried out, the flat-bent pore canal mode is selected after the power supply is turned on. Then a motor switch is turned on, the operation device is dragged by the pull rope to slowly run into the tensioning pore channel, and the measurement device on the operation device collects acceleration data and angle data in real time.
Optionally, this step may include: acceleration conversion calculation, speed calculation and coordinate calculation;
according to the acceleration data in the operation parameters, converting the acceleration data into resultant acceleration data under a space rectangular coordinate system by means of the angle data; calculating to obtain speed data of the running device according to the resultant acceleration data; and calculating to obtain coordinate information of the operating device under a space rectangular coordinate system according to the resultant acceleration data and the speed data.
And establishing a stretching pore passage trend model according to the coordinate information.
Optionally, the measurement device may perform the establishment of the tensioned duct strike model according to the operation parameters, or the operation parameters may be imported into a computer, and the tensioned duct strike model may be established on the computer according to the operation parameters.
Optionally, the specified starting point is a crossing of the stretching pore channel, the circle center of the crossing is used as the origin of coordinates, namely the starting point, and the X, Y, Z axis forms a rectangular spatial coordinate system. The measuring device collects triaxial acceleration and triaxial angle data once every preset time, the preset time can be 10ms, 15ms and the like, and the value of the preset time is not limited in the embodiment. Judging the starting and ending of the movement according to the acceleration data, calculating the speed of each moment, combining the three-axis angle data, calculating the distance from each moment to the starting point, and forming a distance data set of the whole pore passage so as to establish a stretching hole pore passage trend model.
Optionally, when the recording is started, pulling the running device, and when the acceleration of the X1 axis of the running device is greater than a first threshold value, taking the signal as a signal for starting the recording; and stopping recording when the acceleration of the Z1 axis of the running gear is smaller than a second threshold value. The first threshold and the second threshold may be set empirically, and values of the first threshold and the second threshold are not limited in this application.
In the flat bendWhen the pore canal is measured, a vertical coordinate system is established by taking the circle center of a pore canal opening of the stretched pore canal as a coordinate origin, a horizontal plane formed by X, Y axes is taken as a reference plane, wherein the horizontal direction is an X axis, the vertical direction is a Y axis, the measured angle is a Z axis angle, and the coordinate at the origin is (0, 0). An acceleration decomposition diagram (taking the acceleration in the e-th Δ t as an example) in the flat-bending pore canal measurement mode shown in fig. 7 and a flat-bending trend local measurement diagram shown in fig. 8 are shown. In FIG. 7, the Z-axis angle is φpeIt should be noted that when the operation device is operated in the tensioned duct, the operation device may rotate around the X-axis, and the X-axis generates the rotation factor γ when the operation device rotates as shown in fig. 10pWhen the running device does not rotate during running, the rotation factor is 0, and therefore the acceleration in the horizontal direction in the spatial rectangular coordinate system is: a. thexpe＝axpecosφpe-(aypesinγpe+azpecosγpe)sinφpeAnd the acceleration in the vertical direction in the space rectangular coordinate system is as follows: a. theype＝axpesinφpe+(aypesinγpe+azpecosγpe)cosφpe. In fig. 8, each point can be decomposed into a horizontal distance and a vertical distance, which constitute coordinate information of the point, with specific reference to the following description.
After the first Δ t, the measured X, Y axis acceleration and X, Z axis angle may be expressed as (a)xp1,ayp1,γp1,φp1) (ii) a After a second Δ t, X, Y axis acceleration and X, Z axis angle were measured as (a)xp2,ayp2,γp2,φp2) (ii) a After m-1 deltat, X, Y axial acceleration and X, Z axial angle are measured as (a)xpm-1,aypm-1,γpm-1,φpm-1) (ii) a After the m < th > delta t, the running device is driven out of the tunnel, and the X, Y axle acceleration and X, Z axle angle are measured to be (a)xpm,aypm,γpm,φpm). Since the data measured by the measuring device are all referenced to their own coordinate systems, it is necessary to convert the coordinate systems to the predetermined X, Y,The Z axis constitutes a space rectangular coordinate system.
Note that the angle is an amount of change in angle per Δ t from the angle of the measurement device at the initial time. Then the acceleration in the horizontal direction in the rectangular spatial coordinate system is:
Axp1＝axp1cosφp1-(ayp1sinγp1+azp1cosγp1)sinφp1，
Axp2＝axp2cosφp1-(ayp2sinγp2+azp2cosγp2)sinφp2……
Axpm-1＝axpm-1cosφpm-1-(aypm-1sinγpm-1+azpm-1cosγpm-1)sinφpm-1，
Axpm＝axpmcosφpm-(aypmsinγpm+azpmcosγpm)sinφpm。
the horizontal travel distance of the running gear is respectively
Wherein the content of the first and second substances,
similarly, the acceleration in the vertical direction in the space rectangular coordinate system is:
Ayp1＝axp1sinφp1+(ayp1sinγp1+azp1cosγp1)cosφp1，
Ayp2＝axp2sinφp2+(ayp2sinγp2+azp2cosγp2)cosφp2……
Aypm-1＝axpm-1sinφpm-1+(aypm-1sinγpm-1+azpm-1cosγpm-1)cosφpm-1，
Aypm＝axpmsinφpm+(aypmsinγpm+azpmcosγpm)cosφpm。
the vertical travel distance of the running gear is respectively
Wherein the content of the first and second substances,
the coordinates of the positioning of the running gear at time m are: (X)m,Ym). Wherein, the calculation formula is respectively:
Xm＝Δxp1+Δxp2+Δxp3+...+Δxpm，Ym＝Δyp1+Δyp2+Δyp3+...+Δypm。
when the vertical and curved pore canal is measured, a vertical coordinate system is established by taking the circle center of the pore canal opening of the stretched pore canal as a coordinate origin, and a vertical plane formed by X, Z axes is taken as a reference plane, wherein the horizontal direction is an X axis, the vertical direction is a Z axis, the measured angle is a Y axis angle, and the coordinate at the origin is (0, 0). Similarly, when the operation device operates in the tensioned via, the operation device may rotate around the X axis, as shown in the schematic diagram of the operation device rotating and operating in fig. 10, the X axis may generate a rotation factor γ, and when the operation device does not rotate in the operation process, the rotation factor is 0, so that as shown in the schematic diagram of fig. 9, the vertical bending direction is partially measured, and the acceleration decomposition mode in the vertical bending via measurement mode is the same as the acceleration decomposition mode in the horizontal bending via measurement mode, and is not described in detail herein.
After the first Δ t, the measured X, Z axis acceleration and X, Y axis angle may be expressed as (a)x1,az1,γ1,θ1) (ii) a After a second Δ t, X, Z axis acceleration and X, Y axis angle were measured as (a)x2,az2,γ2,θ2) (ii) a After m-1 deltat, X, Z axial acceleration and X, Y axial angle are measured as (a)xm-1,azm-1,γm-1,θm-1) (ii) a After the m < th > delta t, the running device is driven out of the tunnel, and the X, Z axle acceleration and X, Y axle angle are measured to be (a)xm,azm,γm,θm). Since the data measured by the measuring device are all referenced to their own coordinate systems, it is necessary to convert the coordinate systems into a spatial rectangular coordinate system composed of predetermined X, Y, Z axes.
The angle is an amount of change in angle per Δ t from the angle of the measuring device at the initial time. Then the acceleration in the horizontal direction in the rectangular spatial coordinate system is:
Ax1＝ax1cosθ1+(ay1sinγ1+az1cosγ1)sinθ1，
Ax2＝ax2cosθ2+(ay2sinγ2+az2cosγ2)sinθ2……
Axm-1＝axm-1cosθm-1+(aym-1sinγm-1+azm-1cosγm-1)sinθm-1，
Axm＝axmcosθm+(aymsinγm+azmcosγm)sinθm。
from the acceleration in the horizontal direction, the distance in the horizontal direction can be calculated:
similarly, the acceleration in the vertical direction in the space rectangular coordinate system is:
Az1＝ax1sinθ1-(ay1sinλ1+az1cosγ1)cosθ1，
Az2＝ax2sinθ2-(ay2sinλ2+az2cosγ2)cosθ2，……
Azm-1＝axm-1sinθm-1-(aym-1sinλm-1+azm-1cosγm-1)cosθm-1，
Azm＝axmsinθm-(aymsinλm+azmcosγm)cosθm。
from the acceleration in the vertical direction, the distance in the vertical direction can be calculated:
the coordinates of the positioning of the running gear at time m are: (X)m,Zm). Wherein, the calculation formula is respectively: xm＝Δx1+Δx2+Δx3+...+Δxm，Zm＝Δz1+Δz2+Δz3+...+Δzm。
All the three-axis accelerations obtained by the MPU6050 are multiples of the gravitational acceleration g, and for example, the measured acceleration may be "0.1235 g", and thus the calculated distance result includes the gravitational acceleration g.
And establishing a stretching pore path trend model according to the coordinates obtained by calculation.
According to the system for measuring the trend of the tensioned duct, the measuring device arranged on the operation device can measure the operation parameters in real time along with the operation of the operation device, and the stretched duct trend model is established according to the operation parameters.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (8)
1. A stretch-draw pore trend measurement system is characterized by comprising: an operation device, a measurement device and an operation control device;
the operation device is used for operating on the inner wall of the tensioning pore channel;
the measuring device is arranged on the operating device and used for measuring the operating parameters of the operating device in real time when the operating device operates in the tensioned duct and establishing a tensioned duct trend model according to the operating parameters;
and the operation control device is connected with the operation device and used for dragging the operation device to operate.
2. A tensioned tunnel strike measurement system as recited in claim 1 wherein the operation device includes a carriage plate, a plurality of brackets, a plurality of lead screws, a plurality of wheels, a plurality of axles and a pull ring, wherein the plurality of brackets, the plurality of lead screws, the plurality of wheels and the plurality of axles are all equal in number;
the vehicle plate is used for bearing and fixing the measuring device;
the brackets are fixed around the vehicle plate, and bracket connecting interfaces are arranged on the brackets;
one end of each axle is provided with an axle connecting interface, and the other end of each axle penetrates through the corresponding wheel and is used for supporting the corresponding wheel;
one end of each lead screw is connected with the support connecting interface of the corresponding support, the other end of each lead screw is connected with the axle connecting interface of the corresponding axle, and the lead screws are used for adjusting the distance between the connected supports and the axles so that the corresponding wheels are tightly attached to the inner wall of the tensioning pore channel;
the pull ring is arranged at the front end of the vehicle plate and is used for being connected with the operation control device.
3. A tensioned tunnel strike measurement system according to claim 2 wherein each axle is a U-shaped axle;
the plurality of U-shaped axles respectively penetrate through the corresponding wheels and fix the corresponding wheels at the U-shaped bends of the U-shaped axles;
each lead screw is a threaded lead screw, corresponding threads are arranged in each support connecting interface, and corresponding threads are arranged in each axle connecting interface.
4. A tensioned tunnel strike measurement system according to claim 2 or claim 3 wherein the operation means further comprises: the number of the bearings is the same as that of the axles;
each bearing is arranged on the corresponding axle, so that each wheel is fixed on the corresponding U-shaped axle through the corresponding bearing respectively, and the corresponding wheel is supported to rotate.
5. A tensioned tunnel strike measurement system as recited in claim 1 wherein said operational control means includes:
a rope retracting rod for providing a supporting function;
the first pulley is fixed in the middle of the rope collecting rod;
the motor is fixed at the top end of the rope retracting rod;
the second pulley is fixed at the opposite end of the motor on the rope retracting rod through a universal coupling;
one end of the pull rope is connected with the running device, and the other end of the pull rope winds the second pulley after winding the first pulley, so that the motor drives the second pulley to rotate through the universal coupling, the pull rope is wound on the second pulley, and the first pulley is rotated through the pull rope to pull the running device to move.
6. A tensioned tunnel strike measurement system as claimed in claim 1 wherein said measurement means includes a master control unit, an acceleration measurement unit and an angle measurement unit; the operating parameters comprise acceleration data of the operating device and angle data of the operating device;
the main control unit is respectively connected with the acceleration measuring unit and the angle measuring unit and is used for sending measuring commands to the acceleration measuring unit and the angle measuring unit;
the acceleration measuring unit is used for acquiring acceleration data of the operating device in real time according to the received measuring command and sending the acceleration data to the main control unit;
the angle measuring unit is used for acquiring angle data of the operating device in real time according to the received measuring command and sending the angle data to the main control unit;
the main control unit is further configured to receive the acceleration data and the angle data, and perform operation processing according to the acceleration data and the angle data to obtain coordinate information.
7. A tensioned duct course measuring system according to claim 1, wherein when the tensioned duct course is measured, a spatial rectangular coordinate system and a measuring device coordinate system are established, and the measuring device coordinate system is converted to the spatial rectangular coordinate system by the measured operating parameters of the operating device, and the operating parameters after the coordinate system conversion are subjected to arithmetic processing to obtain coordinate information, and a tensioned duct course model is established based on the coordinate information.
8. A tensioned tunnel strike measurement system as recited in claim 6 wherein said measurement device further comprises: the device comprises a battery unit, a storage unit and a measurement mode selection unit;
the battery unit is respectively connected with the main control unit, the acceleration measuring unit and the angle measuring unit and used for supplying power to the main control unit, the acceleration measuring unit and the angle measuring unit;
the storage unit is used for receiving and storing the coordinate information sent by the main control unit;
the measurement mode selection unit is used for providing corresponding modes of the tensioned pore channel test, and the modes comprise a vertical bent pore channel mode and a horizontal bent pore channel mode.
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